Question by Summer Clouds - Discuss with MathYouLike

Summer Clouds moderators

23/11/2017 at 15:41

Kylie writes a 1 after A, a 2 after B, and so on, writing a single digit in counting order after each of the first nine letters of the alphabet. When she reaches 10, she writes the 1 after J and the 0 after K. When she reaches the Z, the 1 from 18 follows it; then, she cycles back to the start of the alphabet, and the 8 follows the A. After what letter does Kylie write the 6 in 26?

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Lê Quốc Trần Anh Coordinator 23/11/2017 at 18:01

We have: 19 20 21 22 23 24 25 26

BC DE FG HI JK LM NO PQ

So the letter has a 6 in the number 26 is Q
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